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# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import argparse
import fixtures
import autopage
import autopage.argparse
class ArgumentParseTest(fixtures.TestWithFixtures):
def setUp(self):
patch_ap = self.useFixture(fixtures.MockPatch('autopage.AutoPager'))
self.pager = patch_ap.mock
self.stream = self.useFixture(fixtures.StringStream('stdout')).stream
self.pager.return_value.__enter__.return_value = self.stream
def test_argparse(self, module=autopage.argparse, color=True):
self.pager.return_value.to_terminal.return_value = color
parser = module.ArgumentParser()
try:
parser.parse_args(['foo', '--help'])
except SystemExit as exit:
self.assertIs(self.pager.return_value.exit_code.return_value,
exit.code)
self.pager.assert_called_once_with(None,
allow_color=True,
line_buffering=False,
reset_on_exit=False)
self.pager.return_value.__enter__.assert_called_once()
self.stream.seek(0)
self.assertEqual('\033' in self.stream.read(), color)
def test_argparse_no_color(self):
self.test_argparse(color=False)
def test_monkey_patch(self, color=True):
patch = self.useFixture(fixtures.MockPatch('argparse._HelpAction'))
autopage.argparse.monkey_patch()
self.assertIsNot(patch.mock, argparse._HelpAction)
self.test_argparse(argparse, color)
def test_monkey_patch_no_color(self):
self.test_monkey_patch(color=False)
def test_monkey_patch_context(self, color=True):
patch = self.useFixture(fixtures.MockPatch('argparse._HelpAction'))
with autopage.argparse.monkey_patch():
self.assertIsNot(patch.mock, argparse._HelpAction)
self.test_argparse(argparse, color)
self.assertIs(patch.mock, argparse._HelpAction)
def test_monkey_patch_context_no_color(self):
self.test_monkey_patch_context(color=False)
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